Tightened IgnoreParen.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43517 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Sema/SemaExpr.cpp b/Sema/SemaExpr.cpp
index e5412d4..ac1c440 100644
--- a/Sema/SemaExpr.cpp
+++ b/Sema/SemaExpr.cpp
@@ -1194,13 +1194,8 @@
 // Utility method to plow through parentheses to get the first nested
 // non-ParenExpr expr.
 static inline Expr* IgnoreParen(Expr* E) {
-  
-  while (true) {
-    if (ParenExpr* P = dyn_cast<ParenExpr>(E))
-      E = P->getSubExpr();
-    else
-      break;
-  }
+  while (ParenExpr* P = dyn_cast<ParenExpr>(E))
+    E = P->getSubExpr();
   
   return E;
 }